The crank pin on a RB and Nova Rossi are different sizes.

5mm RB, 5mm Nova, am I missing something here?

Nova .195", RB .198". Yes you're missing something.

This has always been the case, actually .196 on the Nova. On some newer Rb engines they may have the .196 size. When I used to rebuild alot of Rb's and the crank was worn, a used nova rod would fit great saving some $.

Rex

That's correct Rex, my mistake. OS is .195"

Why on earth would you people be using imperial measurements when measuring products designed and manufactured in countries which use metric? Makes no sense whatsoever.

A measurement is a measurement. Fact is you stated crankpins are same size but they aren't. However, my RB Blast V12 has a full circle single slugged crank that has the nova sized(.196") crankpin. Seems like the blast is being built using parts bin specials.

So first you say I'm wrong.
Then you say I'm right.

Are you a bit confused?
Remember the user asked about a Blast V15.

Just saying traditionally RB has .198" and nova has .196". The blast is a crapshoot. I wouldn't be surprised if the same version differs.

The only difference between your V12 and the V15 is the V15 has two slugs on the crank, conrod part number is the same and everything. So basicly, as far as I can tell, he should be able to use the cheap Go or Alpha con rods.

Well I would measure for sure. The exploded view of engine parts that came with my engine doesn't match squat that's in my engine. It's a joke. If V15 really is the same then the nova rod works. Why anybody would put a pos alpha rod in a nova based engine is beyond me.

How's the performance of it otherwise?

IMO rod-play and the need to change them is way overrated..

Sorry fellas, I didn't mean to start an argument here. I'll just try a friends GO rod and see.
Reason I want to use an Alpha or GO rod is because the cost of an OEM RB rod is 60+ dollars and the engine was only 159.99 so I can't see me spending the coin for an RB rod. If I can get away using a cheaper rod for a few more gallons then I'm a happy camper. I appreciate all the responses and again, sorry to start all of this.

Well the rod has a lot of slop at TDC and after seeing a couple of my buddies snap a rod in the last month in their engines....other brands, I don't want to risk losing the whole engine with a damaged sleeve too. Just for peace of mind.

OK, but how does it run? Does it have the oomph for truggy?...

It has the oomph but I think I could use more bottom end. I've ran it with the 9886 so it could be the reason. I will try another pipe later when I have the chance.

other brand rods break because they aren't tempered good like Nova and OS, and not the same quality.. and Nova make RB so.. I wouldn't worry..

As a matter of fact, I just remembered. One guy did indeed lose a rod on an RB C6 about a month ago

Use a novarossi R7 rod,The Rb rod is a 5.02mm crank pin and will not fit.

Man I'm really tempted by that RB Rally engine to put in my buggy for shxxs and giggles.. Just got some Amain discount codes too. At minimum I'd get 12 bucks off - it'd be like $178... I guess if it's a rally eninge it's designed to rev high, with not so much torque, so I assume something like a 2013 torquey pipe would be good for it......

that engine is likely the same as a Fire 11........The Fire 11 was just a offroad dressed Rally 11....

V19 has Nova crank and nova rod with smaller pin. At least mine does.

And on road motors traditionally have way more torque than off road motor, as the cars have the potential to generate a lot more grip and actually use the power.

I have a friend that runs a Speed in his buggy and it's pretty nuts.

Kinda wish I had gotten the Rally instead of the V19 as it's gonna most likley end up in my truck.

If it's a F11, it at least doesn't have the good front bearing... However much a difference that makes..

The Rally also says 14.5mm crank, the Fire 11 14mm....

BillyT, you don't like the V19? Not enough for truggy? You had the V11 right, and loved it?

V11 in my truck was cut. Been running it with 6.5 nitromizer insert in buggy to slow it down.

Verdict still out on V19. Just haven't had enough time to run it...

Just got three tanks through that used Fire 11 I got (and had pinched..) Ran great.. The 2045 (with different, longer header) was kind of lame. Put on an SH "High Torque" pipe, and it was much better. No EFRA number, so not raceable I guess.. Need to get me a 2013 pipe...

Try the 2058 pipe on the F11, I ran it on mine, I got over 10 minutes on a tank, using it in the new Losi T 3.0 truggy.

I have a 2058 on my other Fire 11 in my RC8T for racing - love it.. For bashing around in the SC8 though I want something with more top end.. The 2058 is great on a track, but it's not quite the top-end screamer I want this other F11 to be.. Though yeah, I probably ought to have something with an EFRA number on it, in case I need to throw it in my buggy or truggy at some point..

Try a shorter header on your 2058 on the F11, that should give it a little more top end. I don't think the 2013 will do As good as the 2058, have you tried the 2086? That's more of a top end pipe.

I have an Ofna 086 on a Nosram/Picco.. Might try that. Like this SH pipe so far though..

2013 aint EFRA legal either, mein freund :)

http://www.google.dk/url?sa=t&source...tsYUYE9nk3xFkw

Ah, OK.. Still, I want one.. ;)

The 086 is though, right?...

Though like strong?

EFRA approved...

I'm pretty sure it is..

Nope. 9886, 086 etc are not approved

I went through this a couple years ago on a German forum.. And I thought it was. Maybe I meant the 053?..

Though I think it was the 086. And some guy posted the German rules in which it stated that the 9886 and its derivative 086 were allowed.. But I could be thinking of the 053(but I don't see why.. I DO race the 086 on my modded Nosram.. I have an 053 too, but have never really planned on racing it the way I did the 086.. Not that I race at a particularly high level though..)

053 is a no go too :D Sorry

I'm positive I had this discussion 2-3 years ago - pretty sure it was the 086. Maybe it's changed in the last couple of years..

Edit - Just doing some quick googling. It may be that there is/was a difference between EFRA approval between buggy and truggy..

Double Edit - OK, 053 and 086 are NOT allowed at EFRA races.. Which I don't think I'm ever going to race at.. For DMC (the main German org.) it seems like you can race what you want.. - in truggy anyway...

053 IS Efra approved, Its the 2035.

I actually like the 053 on the Fire 11.. It's just a note or two too low in the range for me.. ;)

For racing it'd probably be great in truggy.. It seemed that runtime wasn't too bad.. The 2058 does spool up faster though..

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